Pololu FEETECH FS90-FB Micro Servo with Position Feedback

The FS90-FB is a modified version of the FEETECH FS90 micro analog servo, featuring a feedback potentiometer accessible via a fourth wire. This allows direct measurement of the output angle, providing precise control and enabling the detection of any interference in reaching target positions. Operating with standard RC servo pulses, it offers a running angle of approximately 120° over a pulse range of 900 µs to 2100 µs. The servo cables are approximately 38 cm long, with the feedback wire terminated for compatibility with standard header pins.

This micro servo is ideal for robotics projects where precise position control is crucial. By utilizing the feedback feature, users can implement complex closed-loop control systems, making it suitable for applications requiring high accuracy and reliability, such as robotic arms, pan-tilt camera systems, and small-scale automation tasks.

One of the standout benefits of this servo is its ability to provide real-time position feedback, which can significantly enhance the performance of your projects. This feature is particularly useful for developers and hobbyists who need to ensure their devices maintain precise movements and positions, even under varying load conditions.

With its compact size and extended cable length, the FS90-FB is a versatile component that fits seamlessly into tight spaces, making it a great choice for small robots or model aircraft. Despite its small form factor, it delivers robust performance, allowing for smooth and reliable operation.

It's important to note that while this servo is designed for durability and precision, care should be taken to avoid stalling or back-driving, as these actions can cause damage. The FS90-FB is a powerful tool for anyone looking to add precise motion control to their projects.

For those considering the FS90R, it offers continuous rotation and open-loop speed control, providing a different set of functionalities for applications where constant motion is required. Both models share the same dimensions and motor, ensuring compatibility with accessories like the 60×8 mm wheel.